Hello all,
long time lurker here :)
I must say i agree with Jonathan.
A forum would be redundant. We have this mailing list, a wiki for
'long term' knowledge and if you need help immediately there is the
irc channel (irc://irc.freenode.net/#lua) (where i often idle :P).
Again i think Jonathan has the right of it, maybe if the web archive
had a better search system, and maybe a mode to 'nest' messages (beyond
the 'thread view' it has now, i.e. something similar to webboards like
slashdot, or kuro5hin) that may allay some of the original poster's
concerns.
--vat